Load Specifications
Load data in caliber .300 Norma Mag. with .311 | 174gr | Prvi Partizan FMJ BT bullet and 75 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Vihtavuori N560 and Hodgdon Retumbo.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 56,289 psi | 88% | 2986 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 57,406 psi | 90% | 3022 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 53,925 psi | 85% | 3074 fps | 98.3% |
| Accurate MAGPRO | <<locked>> | 92% | 54,810 psi | 86% | 3074 fps | 97.4% |
| ADI AR 2209 | <<locked>> | 90% | 54,491 psi | 85% | 3018 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 94% | 56,043 psi | 88% | 3081 fps | 98.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,256 psi | 79% | 2972 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,962 psi | 70% | 2927 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 54,650 psi | 86% | 3012 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 86% | 54,578 psi | 86% | 3022 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 55,550 psi | 87% | 3031 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 57,580 psi | 90% | 3061 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 94% | 56,086 psi | 88% | 3077 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 96% | 57,363 psi | 90% | 3048 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 56,710 psi | 89% | 3110 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 53,780 psi | 84% | 3077 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 57,682 psi | 90% | 3038 fps | 96.2% |
| Bofors RP15 | <<locked>> | 96% | 55,056 psi | 86% | 3058 fps | 99.2% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,736 psi | 83% | 3048 fps | 98.5% |
| Bofors RP5 | <<locked>> | 94% | 56,086 psi | 88% | 3077 fps | 99.4% |
| Bofors RP7 | <<locked>> | 84% | 55,898 psi | 88% | 2963 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,593 psi | 87% | 3068 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 84% | 55,317 psi | 87% | 3018 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 82% | 54,244 psi | 85% | 2972 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 92% | 55,869 psi | 88% | 3018 fps | 97.9% |
| Hodgdon H4831 SC | <<locked>> | 92% | 54,839 psi | 86% | 2999 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 54,781 psi | 86% | 2943 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,608 psi | 87% | 3182 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 84% | 55,854 psi | 88% | 3051 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,202 psi | 58% | 1900 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 57,624 psi | 90% | 3002 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 57,290 psi | 90% | 2989 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 57,653 psi | 90% | 3009 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 56,797 psi | 89% | 3002 fps | 98.2% |
| IMR 7828 SSC | <<locked>> | 96% | 57,609 psi | 90% | 3120 fps | 98.8% |
| Lovex S065 | <<locked>> | 84% | 54,650 psi | 86% | 2933 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 56,304 psi | 88% | 2982 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 57,348 psi | 90% | 3002 fps | 100% |
| Norma 204 | <<locked>> | 86% | 55,085 psi | 86% | 3002 fps | 99% |
| Norma 217ᴾ | <<locked>> | 100% | 40,524 psi | 64% | 2848 fps | 97.6% |
| Norma MRP | <<locked>> | 92% | 56,014 psi | 88% | 3097 fps | 99.9% |
| Norma URP | <<locked>> | 86% | 55,767 psi | 87% | 3002 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 54,520 psi | 85% | 3074 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 86% | 54,650 psi | 86% | 3005 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 57,159 psi | 90% | 3074 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,884 psi | 59% | 1942 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 57,377 psi | 90% | 3041 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 55,825 psi | 87% | 3071 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 56,637 psi | 89% | 3182 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 51,314 psi | 80% | 3054 fps | 96.9% |
| Rottweil R 903 | <<locked>> | 82% | 57,334 psi | 90% | 2966 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 55,651 psi | 87% | 2986 fps | 98.4% |
| Rottweil R 905 | <<locked>> | 92% | 57,159 psi | 90% | 3051 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 84% | 55,898 psi | 88% | 2963 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 84% | 54,650 psi | 86% | 2933 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 56,304 psi | 88% | 2982 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,971 psi | 89% | 2831 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 57,348 psi | 90% | 2940 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 56,753 psi | 89% | 3048 fps | 99.4% |
| Somchem S355 | <<locked>> | 82% | 56,898 psi | 89% | 2959 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 57,174 psi | 90% | 2979 fps | 98.1% |
| Somchem S365 | <<locked>> | 88% | 56,260 psi | 88% | 3005 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 54,027 psi | 85% | 2969 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 82% | 54,592 psi | 86% | 2877 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 57,435 psi | 90% | 2992 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 57,406 psi | 90% | 3009 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 56,637 psi | 89% | 2999 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 55,854 psi | 88% | 3022 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 55,796 psi | 87% | 3091 fps | 98.1% |
| Vihtavuori N565 | <<locked>> | 98% | 55,753 psi | 87% | 3071 fps | 98.3% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 52,446 psi | 82% | 3061 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 57,000 psi | 89% | 2949 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 55,521 psi | 87% | 3018 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 96% | 55,317 psi | 87% | 3133 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 53,809 psi | 84% | 2959 fps | 99% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 34,983 psi | 55% | 2579 fps | 97% |
| Accurate 4350 | <<locked>> | 80% | 46,789 psi | 73% | 2844 fps | 100% |
| Accurate High Country | <<locked>> | 84% | 43,642 psi | 68% | 2871 fps | 95.9% |
| Accurate MAGPRO | <<locked>> | 88% | 47,485 psi | 74% | 2940 fps | 95.6% |
| ADI AR 2209 | <<locked>> | 80% | 38,957 psi | 61% | 2710 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 86% | 42,670 psi | 67% | 2822 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 94% | 41,031 psi | 64% | 2779 fps | 95% |
| ADI AR 2225 | <<locked>> | 92% | 34,548 psi | 54% | 2671 fps | 95.8% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 39,363 psi | 62% | 2710 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,730 psi | 70% | 2851 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,750 psi | 81% | 2972 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,001 psi | 61% | 2703 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 82% | 37,333 psi | 59% | 2700 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,518 psi | 53% | 2605 fps | 99.4% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,211 psi | 46% | 2503 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,811 psi | 58% | 2746 fps | 98.8% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 54,215 psi | 85% | 2979 fps | 95.4% |
| Bofors RP15 | <<locked>> | 86% | 39,697 psi | 62% | 2756 fps | 95.8% |
| Bofors RP30 | <<locked>> | 92% | 39,972 psi | 63% | 2789 fps | 95.1% |
| Bofors RP5 | <<locked>> | 82% | 37,333 psi | 59% | 2700 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 49,371 psi | 77% | 2851 fps | 99% |
| Hodgdon H1000 | <<locked>> | 90% | 39,247 psi | 62% | 2740 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 48,414 psi | 76% | 2897 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 80% | 50,908 psi | 80% | 2913 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 86% | 45,600 psi | 71% | 2831 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 86% | 44,744 psi | 70% | 2812 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,192 psi | 66% | 2730 fps | 100% |
| Hodgdon Retumbo | 80 gr | 88% | 37,202 psi | 58% | 2779 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 48,153 psi | 75% | 2920 fps | 99% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,862 psi | 44% | 1699 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,730 psi | 70% | 2776 fps | 98.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,575 psi | 79% | 2874 fps | 99.4% |
| IMR 4831 | <<locked>> | 80% | 44,425 psi | 70% | 2789 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 44,150 psi | 69% | 2766 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 88% | 43,903 psi | 69% | 2861 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 48,167 psi | 75% | 2822 fps | 99.7% |
| Lovex S070 | <<locked>> | 80% | 46,557 psi | 73% | 2812 fps | 99% |
| Lovex S071 | <<locked>> | 82% | 32,184 psi | 50% | 2507 fps | 95.9% |
| Norma 204 | <<locked>> | 80% | 44,904 psi | 70% | 2815 fps | 97.1% |
| Norma 217 | <<locked>> | 96% | 35,360 psi | 55% | 2717 fps | 95.6% |
| Norma MRP | <<locked>> | 80% | 36,419 psi | 57% | 2707 fps | 96.2% |
| Norma URP | <<locked>> | 80% | 45,788 psi | 72% | 2831 fps | 99.9% |
| Ramshot Grand | <<locked>> | 86% | 40,741 psi | 64% | 2802 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 44,773 psi | 70% | 2828 fps | 99.2% |
| Ramshot Magnum | <<locked>> | 86% | 36,390 psi | 57% | 2674 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,398 psi | 45% | 1739 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,833 psi | 73% | 2867 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,889 psi | 70% | 2881 fps | 99.8% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 33,910 psi | 53% | 2680 fps | 95.3% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 47,630 psi | 75% | 2986 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 53,722 psi | 84% | 2910 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 43,076 psi | 68% | 2753 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 80% | 38,435 psi | 60% | 2690 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 49,371 psi | 77% | 2851 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,167 psi | 75% | 2822 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 46,557 psi | 73% | 2812 fps | 99% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,606 psi | 84% | 2785 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,297 psi | 74% | 2772 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,101 psi | 60% | 2687 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 53,417 psi | 84% | 2904 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 43,845 psi | 69% | 2736 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 42,888 psi | 67% | 2785 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,957 psi | 61% | 2674 fps | 96.7% |
| Vihtavuori N150 | <<locked>> | 80% | 51,184 psi | 80% | 2825 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,224 psi | 74% | 2828 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 36,071 psi | 57% | 2598 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 46,702 psi | 73% | 2828 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 37,695 psi | 59% | 2687 fps | 99.4% |
| Vihtavuori N560 | 81.1 gr | 86% | 45,223 psi | 71% | 2894 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 90% | 42,453 psi | 67% | 2818 fps | 95.1% |
| Vihtavuori N568 | <<locked>> | 98% | 48,791 psi | 76% | 2992 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,369 psi | 73% | 2785 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,602 psi | 76% | 2900 fps | 99.2% |
| Winchester StaBALL HD | 74.7 gr | 80% | 29,907 psi | 47% | 2618 fps | 99.5% |
| Winchester Supreme 780 | <<locked>> | 82% | 38,116 psi | 60% | 2654 fps | 95.3% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 75 powders for .300 Norma Mag. loaded with the .311 | 174gr | Prvi Partizan FMJ BT. Hodgdon Retumbo delivers the highest muzzle velocity at 3,182 fps; across all powders the maximum-charge window runs from 1,900 fps to 3,182 fps. ADI AR 2217 gives the best case fill at 100 %, and 75 of the 75 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 174.0 gr projectile in 0.311" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Winchester StaBALL HD, Vihtavuori N560, Hodgdon Retumbo rank at the top here: for .300 Norma Mag. with the .311 | 174gr | Prvi Partizan FMJ BT they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.